Binding post for electric cables



' June 2, 19245.

E, B. NOWOSIELSKI BINDING POST FOR ELECTRIC CABLES Filed septg24, 1920 /N VEN TUR MPM A TTURNEY through Vthe binding Param l.im 2, 1925.

UNITED STATES v1,540,2r1 PATENT- oFI-jlcE.

EDWARD E. NowosrELsxI, oi""NEWAEx, -NEW JERSEY, AssICNoE v'ToI srLITDoEE 1 ELECTRICAL COMPANY, or NEwAEx, NEW JERSEY.

BINDING PQST FOR ELECTRIC Application led September 24, 1920. Serial No. 412,441.

To all t may concern.'

Be it known that I, EDWARD B. NowosiEL- SKI, a citizen of the United States, reslding at Newark, in the county of Essex, State of New Jersey, haveinvented certain new and useful Improvements in Binding Posts for Electric Cables,'of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

My invention relates to binding posts for electric cables, more particularly those used in connection with lignition apparatus.-

The object of m a ,quick detachablil. type.

A further object is to provide a binding posty of -this typey which permits of quick assembly of the cable and the terminal.

Another object of this invention is to provide a cheap and eicient binding post of the quick detachable type.

Other objectswill appear to those skilled in the artv from the following description and accompanying drawings, 1n which- Figure l is a 4longitudinal sectional view ost, showing the cable 1n place and the blnding v,post mounted on a lframe, and y lFigure 2 is a plan view of my binding post, the cable being inserted in place.

My binding post consists of two threaded main portions, a male member 1 threaded at 2 and provided with an enlarged portion threaded at 3 anda female member 4 having a bore threaded at 5, both of high tension, insulation material.

binding post of this the male member is a roughened metallic pin 6 made of steel or other suitable hard conductive material, the end of this pin bein turned down to a smaller diameter as at and tapered to alstiletto point as shown in dotted lines in Figure 1.

lThe female member has a bore 8 `at`aninvention 1s to provide Moulded within from the conductor 18 jumping out to the mounting plate 13, which it would have a tendency todo through the joint produced by the threads 3 and 5, if the partition were not present. The -lower portion of the member 4 is channeled as at 10 land asoft rubber bushing provided with a beaded edge 12 is slipped over the member 4 so as to render the binding 'post dust and moisture proof when the cable is in place. The malel member is clamped to its support as to the framework 13 of a magneto by means' of a Washer 14 and locknut 15. A quill terminal `16 as from the secondary of an induction coil abuts a slightly hollowed out part of the pin 6 when the male portion of the binding post is in place.

In-assembling the two parts of the binding post, the male member being mounted in place on ythe magneto frame, the cable is first inserted in the bore 8 until itseats against the bottom of the bore then the female member is threaded onto the male member, with the tapered portion of the pin extending through the hole. It is preferable that the cable fitsfsnugly within the bore, so that when the ta ered pin penetrates the cable, the spreading of the cable will cause it to be bound tightly against the wall of the bore. As the two members are screwed together, the tapered pin pierces the insulation of the cable and engages the conductive wire therein, Thus a quick and good electrical connection is assured by the mere screwing on of the member 4.

Having thusjdescribed my invention what I claim is:

1. A quick detachable binding post comprising a female member provided with a cable receiving bore, another lbore at an angle to the same, a partition separating said bores, said art-ition being formed integral with the emale member, an end being provided with 'a centrally located aperture, a male member of insulating material "tting snugly into the llast mentioned bore,

`prising a one-piece female member provided with a cable receiving bore, another bore at an angle to the same, a partition separating said bores, said partition being formed integral with the female member and provided with a centrally located aperture, a male member of insulating material screw threaded into the second mentioned bore, said male member having an extended part with a bore therein, a conducting pin l0 moulded in the male member closing one end of the bore therein, lsaid pin having a tapered end passing through the aperture in said partition into Contact with said cable in the female member, said bore in the male member serving to support a conductor in end to end Contact with said pin. A

In testimony whereof, I aix my signature.

EDWARD B. NOWOSIELSKT. 

